4 Digital Green LED Tachometer RPM Speed Meter With NPN Hall Proximity Switch Sensor

.size_table_start table,.size_table_start table tr td { border:2px solid #ddd;}.size_table_start table { width: 100%; min-height: 25px; line-height: 25px; text-align: center; border-collapse: collapse;}.size_table_start,.size_table_end {clear:both;} Description: Working power supply???DC8-24v 30mA Measure range : 10-9999RPM. Error range: 0.1% Clear zero: Automatic . Clear zero time:About 10s. Refresh frequency: 0.2-0.5S(120-1200RPM),0.25-0.06S(2400-9999RPM). Response frequency:100HZ. Measure indication:(RPM<5000,&pm;2),(RPM>5000,&pm;3). Sign:NPN 5 wires normally open. Detected objects: Magnet. Sensor wiring:brown(Power+),black(Test+),blue(signal).
Function Selection: 1.Reset or manual reset on power. 2.Store the data (no power).
Pacage Included 1 X LED Tachometer 1 X NPN Hall Proximity Sensor 1 X Magnet